CN103236723A - Multi-mode power supply device based on working under street lamp - Google Patents

Abstract

A multi-mode power supply device based on street lamps. The upper ends of the street lamp posts are respectively connected with lamp stands, dye-sensitized solar cells, traffic indicators, signal lights and billboards. The billboards are connected to LEDs through photosensitive self-control switches. As for the lighting lamp, the dye-sensitized solar cell is connected to a battery box, the battery box is respectively connected to an LED lighting lamp and a controller, the controller is connected to a signal lamp, and there is a street lamp on the top of the lamp frame. The technical effect of the present invention is that three power supply modes can be provided: power supply mode 1, when the sunlight is sufficient during the day, the dye-sensitized solar cell generates current to supply power under sunlight irradiation; power supply mode 2, when there is no sunlight and the street lights are not on, Power is supplied by the current output from the energy storage battery; in power supply mode 3, when the street lamp is turned on in the dark, the dye-sensitized solar cell generates current to supply power under the illumination of the street lamp and other light sources.

Description

A multi-mode power supply device working under street lights

technical field

The invention relates to a multi-mode power supply device for applying a dye-sensitized solar cell under low light conditions such as street lamps, and belongs to the technical field of new energy applications.

Background technique

With the development of photovoltaic technology, it is very common to use solar cells to generate electricity in daily life, but most of them are silicon solar cells. Although traditional silicon solar cells can exhibit high photoelectric conversion efficiency under strong light irradiation, they cannot be used in low light conditions such as insufficient sunlight and nighttime lighting.

The dye-sensitized solar cell was invented by Professor Micheal Gratzel of the Swiss Federal Institute of Technology in Lausanne in 1991. Due to its unique sandwich structure design and special photoelectric conversion principle, it has attracted widespread attention. Dye-sensitized solar cells not only have the characteristics of low cost, simple manufacturing process, green environmental protection, and little influence from the angle of light irradiation, but also have low-light characteristics, that is, they can also generate light under the irradiation of diffuse light and weak light. current, and can achieve high photoelectric conversion efficiency. This means that dye-sensitized solar cells can efficiently convert light energy into electrical energy even under non-sunlight-irradiated conditions. In April 2012, the British G24 Innovation Company announced that the efficiency of dye-sensitized solar cells in converting incandescent light has reached 26%, which makes dye-sensitized solar cells expected to be widely used in indoor power generation. Most of the light sources used in this 'indoor solar cell' come from artificial light sources such as incandescent lamps, fluorescent lamps and LED lamps. Texas Instruments believes that this dye-sensitized solar cell is currently the most effective light energy harvesting technology in low light conditions on the market.

In recent years, China's urbanization process has been accelerating, and urban lighting has brought convenience to people's travel. But for light sources such as street lamps, only the lighting function has been utilized at present, and the light energy sent by it has not been recycled, and has been wasted in vain. At the same time, our country is rapidly entering the automobile society. In order to effectively prevent traffic accidents, it is very necessary to install some traffic indicators and signal lights in areas where traffic accidents occur frequently. In addition, some non-electric billboards installed on lampposts lack lighting at night and cannot clearly display their promotional content. The effect of publicity is greatly reduced, and the value of commercial use is lost.

The invention utilizes the low-light power generation characteristics of dye-sensitized solar cells to provide multi-mode power supply for display and lighting equipment such as traffic indicators, signal lights, and billboards under the irradiation of light sources such as sunlight and street lamps. It not only solves the contradiction that solar cells have excess power during the day and insufficient power during black days, but also enables the recycling of precious energy, enabling solar cells to operate and generate electricity throughout the day, which has huge application potential advantages.

Contents of the invention

The technical problem to be solved by the present invention is to provide a multi-mode power supply device working under street lamps, which utilizes the low-light power generation characteristics of dye-sensitized solar cells, and uses dye-sensitized solar cells under the irradiation of light sources such as sunlight and street lamps as Display and lighting devices such as traffic indicators, signal lights, and billboards provide power in multiple modes. It not only effectively solves the contradiction that the solar battery has excess power during the day and insufficient power in the dark, but also enables the recycling of precious energy, enabling the solar battery to operate and generate electricity throughout the day.

The present invention is achieved in this way, it includes dye-sensitized solar cells, battery boxes, controllers, traffic indicators, signal lights, billboards, lamp stands, lampposts, street lamps, LED lighting lamps, photosensitive automatic control switches, and is characterized in that street lamps The upper end of the lamp post is respectively connected with a lamp stand, a dye-sensitized solar cell, a traffic indicator, a signal lamp and a billboard, the billboard is connected to an LED lighting lamp through a photosensitive automatic control switch, and the dye-sensitized solar cell is connected to a battery box, The battery box is respectively connected with an LED lighting lamp and a controller, the controller is connected with a signal lamp, and a street lamp is arranged on the top of the lamp holder. The battery box includes an energy storage battery and a charge and discharge controller.

The technical effect of the present invention is: three power supply modes can be realized: power supply mode 1, when there is sunlight in the daytime, the dye-sensitized solar cell generates current under the irradiation of sunlight, and the current flows into the battery box through the conductive wire, and is controlled by charging and discharging. The adjustment of the inverter stores the electrical energy in the energy storage battery. The current output from the energy storage battery is connected to the controller through conductive wires to supply power to the electrical appliances; power supply mode 2, when there is no sunlight and the street lights are not on, through the control of the photosensitive automatic control switch, the current output from the energy storage battery is charged and discharged. The adjustment of the controller flows through the photosensitive self-control switch to supply power to the electrical appliances; power supply mode 3, when the street lamp is lit in the dark, the dye-sensitized solar cell generates current under the illumination of the street lamp and other light sources, and flows through the conductive The line is input into the battery box, and the electric energy is stored in the energy storage battery through the adjustment of the charge and discharge controller. The current output from the energy storage battery is connected to the controller through the conductive wire to supply power to the electric appliance.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

In the figure, 1. Dye-sensitized solar cell 2. Battery box 3. Controller 4. Traffic indicator 5. Signal light 6. Billboard 7. Light stand 8. Lamp post 9. Street lamp 10. LED lighting 11. Photosensitive Automatic switch.

the

Detailed ways

As shown in Figure 1, the present invention is realized in this way, and the upper end of street lamp post 8 is connected with lamp frame 7, dye-sensitized solar cell 1, traffic indicator 4, signal light 5 and billboard 6 respectively, and said billboard 6 The upper part is connected to the LED lighting lamp 10 through the photosensitive self-control switch 11, the dye-sensitized solar cell 1 is connected to the battery box 2, the battery box 2 is respectively connected to the LED lighting lamp 10 and the controller 3, the controller 3 is connected to the signal lamp 5, and the lamp holder The top of 7 is connected with street lamp 9. The battery box includes an energy storage battery and a charge and discharge controller.

Specific example 1:

Under nighttime conditions, the dye-sensitized solar cell generates current under the illumination of light sources such as street lamps, and the current flows through the conductive wire into the battery box, and the lithium-ion energy storage battery is input to store the electric energy. The current output from the lithium-ion energy storage battery is input to the controller with STC89C52 single-chip microcomputer as the main control chip through conductive wires. The system selects 74HC595 chip and 74HC138 chip to form the column drive circuit and row drive circuit of the signal indicator respectively. The current is then connected to a 64×128-pixel red LED traffic indicator and a signal light composed of 200 yellow LEDs through conductive wires. Through the program setting of the single-chip microcomputer control chip, the static non-flickering display font size of the traffic indicator can be 32×32 pixels, the red font with the content of "students entering and exiting, slow down", and the alternating on and off for 1 second each signal lights.

Specific example 2:

The dye-sensitized solar cell generates electric current under the irradiation of sunlight, and the electric current is input into the battery box through the conductive wire, and then input into the lithium-ion energy storage battery to store the electric energy. The circuit is turned on by the photosensitive self-control switch, and the current output from the lithium-ion energy storage battery is adjusted by the charge and discharge controller to directly supply power to the LED lighting, so that the LED emits bright light to illuminate the printed "Create a civilized city, build a happy home" Charity Billboard.

Specific example 3:

In the absence of any light source, the photosensitive self-control switch conducts the circuit, and the current output from the lithium-ion energy storage battery is adjusted by the charge-discharge controller to directly supply power to the LED lighting, so that the LED emits bright light and illuminates the printed "creating civilization" City, build a happy home' public service billboard.

The above are only three specific implementation examples of the present invention, not all implementation modes. Any equivalent changes to the technical solution of the present invention by reading the present invention are all covered by the claims of the present invention.

Claims (2)

1. one kind based on the multi-mode electric supply installation of working under the street lamp, it comprises dye-sensitized solar cells, battery case, controller, traffic indicator, signal lamp, billboard, lamp bracket, lamppost, street lamp, the LED illuminating lamp, photosensitive autocontrol switch, the upper end that it is characterized in that lamp post is connected with lamp bracket respectively, dye-sensitized solar cells, traffic indicator, signal lamp and billboard, connect the LED illuminating lamp by photosensitive autocontrol switch on the described billboard, described dye-sensitized solar cells connects battery case, battery case connects LED illuminating lamp and controller respectively, controller connects traffic indicator and signal lamp, and there is street lamp on the top of described lamp bracket.

2. a claim 1 is described based on the multi-mode electric supply installation of working under the street lamp, it is characterized in that: can realize that sunlight transforms the electric energy power supply, street lamp light transforms electric energy power supply and three kinds of powering modes of battery case stored electric energy power supply.

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